System and method for radio signal reconstruction using signal processor

Abstract

A waveform reconstruction circuit receives an rf signal from an antenna, digitizes it, and then generates an undistorted reconstructed waveform. The reconstructed waveform can then be conventionally mixed and demodulated to extract useful signal information with enhanced receiver fidelity and sensitivity.

1. A software radio, comprising:
 an antenna; 
 an analog to digital converter (ADC) electrically connected to the antenna and outputting a digitized signal representative of an analog signal received by the antenna prior to rendering an IF signal or a demodulated signal; 
 a digital processor electrically connected to the ADC, the digital processor being programmed with software to decode and extract information from the digitized signal; 
 a mixer generating an intermediate frequency (IF) signal based on the waveform; and 
 a demodulator decoding useful information from the IF signal, wherein at least the mixer and demodulator are embodied in a computer executing software. 
 
   
   
     2. The receiver of  claim 1 , wherein the computer is established by the digital processor. 
   
   
     3. The receiver of  claim 1 , wherein the ADC digitizes the signal prior to any analog demodulation thereof.